Active NPI
Gregory Nicholas Matwiyoff, M.D.
- Pulmonary Disease Physician
- Reno, NV
National Provider Identifier
1932248093
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Pulmonary Disease Physician
- License
- 25119
- Practice address
- 1500 E 2ND St Ste 302
Reno, NV 89502-1198 - Phone
- (775) 982-5000
- Fax
- (775) 982-3900
- NPI assigned
- Feb 5, 2007
- Last updated
- Mar 5, 2026
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Critical Care Medicine (Internal Medicine) Physician | 207RC0200X | 25119 | NV | |
| Pulmonary Disease Physician | 207RP1001X | 25119 | NV | Primary |
| Sleep Medicine (Internal Medicine) Physician | 207RS0012X | 25119 | NV |
Addresses
Primary practice location
1500 E 2ND St Ste 302
Reno, NV 89502-1198
Mailing address
1155 Mill St
Ms M-14
Reno, NV 89502-1576
Phone (775) 982-5262
Other practice location 1
10085 Double R Blvd Ste 325
Reno, NV 89521-4832
Phone (775) 982-5000
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| VAD0000 | Other | DOD |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in NV
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Pulmonary Disease
- Education
- University of New Mexico School of Medicine, 1998
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
1500 E 2ND St
Suite 302
Reno, NV 89502-1198
Phone (775) 982-5000
Hospital & facility affiliations
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 25119 | NV | MD | Sleep Medicine (Internal Medicine) Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Community Care Services LLC | Past | Accepting new patients |
Organizations & group practices 2
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.
-
dba Community Care Services
- Internal Medicine Physician
- Reno, NV
- NPI 1720031768
-
dba Renown Oncology Wellness
- Obstetrics & Gynecology Physician
- Reno, NV
- NPI 1982088274
Hospital & facility affiliations 3
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Reno, NV
- NPI 1124098421
-
- General Acute Care Hospital
- Sparks, NV
- NPI 1932517299
-
- General Acute Care Hospital
- Reno, NV
- NPI 1720058027
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1170633600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1772668800000",
"number": "1932248093",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1155 MILL ST",
"address_2": "MS M-14",
"city": "RENO",
"state": "NV",
"postal_code": "895021576",
"telephone_number": "775-982-5262",
"fax_number": "775-982-3900"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1500 E 2ND ST STE 302",
"city": "RENO",
"state": "NV",
"postal_code": "895021198",
"telephone_number": "775-982-5000",
"fax_number": "775-982-3900"
}
],
"practiceLocations": [
{
"address_1": "10085 Double R Blvd Ste 325",
"address_purpose": "LOCATION",
"city": "Reno",
"state": "NV",
"postal_code": "895214832",
"country_code": "US",
"telephone_number": "775-982-5000",
"fax_number": "775-982-3900",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "MATWIYOFF",
"first_name": "GREGORY",
"middle_name": "NICHOLAS",
"name_prefix": "Dr.",
"credential": "M.D.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2007-02-05",
"last_updated": "2026-03-05",
"certification_date": "2026-03-05",
"status": "A"
},
"taxonomies": [
{
"code": "207RC0200X",
"taxonomy_group": "",
"desc": "Internal Medicine, Critical Care Medicine",
"state": "NV",
"license": "25119",
"primary": false
},
{
"code": "207RP1001X",
"taxonomy_group": "",
"desc": "Internal Medicine, Pulmonary Disease",
"state": "NV",
"license": "25119",
"primary": true
},
{
"code": "207RS0012X",
"taxonomy_group": "",
"desc": "Internal Medicine, Sleep Medicine",
"state": "NV",
"license": "25119",
"primary": false
}
],
"identifiers": [
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "DOD",
"identifier": "VAD0000",
"state": null
}
],
"endpoints": [],
"other_names": []
}Other providers in Reno, NV
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 5, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.